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  • Title: IgM MGUS anti-MAG neuropathy with predominant muscle weakness and extensive muscle atrophy.
    Author: Kawagashira Y, Kondo N, Atsuta N, Iijima M, Koike H, Katsuno M, Tanaka F, Kusunoki S, Sobue G.
    Journal: Muscle Nerve; 2010 Sep; 42(3):433-5. PubMed ID: 20665518.
    Abstract:
    We report a patient with anti-myelin-associated glycoprotein (MAG) neuropathy, predominantly exhibiting severe motor symptoms, accompanied by extensive muscle atrophy mimicking Charcot-Marie-Tooth disease. Nerve conduction studies revealed mild retardation of motor conduction velocities and significant prolongation of distal latency. Sural nerve biopsy revealed widely spaced myelin and positive staining of myelinated fibers with an IgM antibody. Predominant motor symptoms with muscle atrophy can be one of the clinical manifestations of anti-MAG neuropathy.
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